Improved machine for corrugating metal plates



'UNITED STATES PATENT OEEIcE.

RICHARD MONTGOMERY, OF NEW YORK, N. Y.

IMPROVED MACHINE FOR CORRUGATING METAL PLATES.

Specification forming part of Letters Patent No. 23,599, dated April l2,1859.

To all whom it may concern:

Be it known that I. RICHARD MONTGOMERY, of the city of New York, in theState of New York, have invented a new and useful Improved Machine forCorrugating Iron for Boiler-Plates and other Purposes; and I do herebydeclare that the following is a full and exact description thereof,reference being had to the accompanying drawings, and to the letters ofreference marked thereon.

In using corrugated iron for the various purposes to which it is adaptedit is a great advantage to have the margins left smooth and plain, so asto afford a convenient surface for uniting and riveting the differentsheets or pieces together. It is also important to have as muchthickness of metal at such places as possible, since the sheets aresomewhat weakened by the holes made for the rivets.

In corrugating sheets of metal it is also found that by the ordinarymodes now in use there is great liability to get the sheets out of truewhile they are being fed to the machine, and which results inconsiderable loss to the manufacturer.

It is also found that iron which has been corrugated by passing itbetween but one set of rolls is often injured, While if subjected to thesame amount or degree of corrugation by passing it between two sets ofrolls, the rst set commencing the corrugation and the second completingit, that the iron is much better than if the corrugation had been doneat one operation or by being pressed between but one set of rolls.

It is also found that it is necessary to have the two sets of rolls beara certain peculiar relation to each other, in order to effect theoperation by one heat.

To facilitate the foregoing operations, together with the attainment ofother advantages in the process of corrugating iron, is the object ofthe present invention.

To enable others skilled in the art to which my invention belongs tomake and use the same, I will proceed to describe it, reference beinghad to the accompanying drawings, in which- Figure l represents alongitudinal section through the machine; Fig. 2, a top view of one ofthe rolls c c d d; Fig. 5, a section of the plate after it has passedthrough the first pairs of rolls d d; Fig. 4, a section of the plateafter it has passed through the second pair of rolls c c.

The plate m to be subjected to corrugation is placed on table r in frontof the feedingbar lo. This bar la is attached to two armsj, of whichonly one is represented in the drawings. The bar is attached to the armsin any suitable way, so that it can be set at a greater or less distancefrom the ends of the arms. The arms j have at their front ends pins s,which may be adjusted in the radial slots Zat a greater or less distancefrom the center of the gear-wheels d. By this means a reciprocatingmotion will be imparted to the bar k, which during its forward sweepserves to push the plate m toward and between the first pair ofcorrugating-rolls d d.

The shoulders y y of the roll d are provided wit-h one pin n each, thesepins taking into corresponding holes q in the shoulders of the lowerroll d.

Between the rolls d d. the plate receives its first corrngation. As theplate passes from between the rolls d d its edges enter and are guidedby slots t', one on each side of the machine, formed by guide-pieces 7ih. Passing beyond the front end of the slots, the plate enters betweenthe second pair of rolls c c', which latter are not so far apart as thefirst two rolls d d, for the purpose of compressing the material to itsfinal thickness, and thus completing the process of corrugation. Ofcourse the indentations of the second pair of rolls c c' are deeper thanthose of the rolls (l d', so as to correspond with the expansion of thematerial consequent upon the diminution of its thickness.

From the rolls c c' the corrugated plate passes over the sweeping andforming roll w, as represented by red lines in Fig. l.

Part of the corrugated circumference of the rolls is cut off, as seen att t t t in Fig. 1, for the purpose of leaving the ends of the platessmooth.

The distance of the bar k from the rst pair of rolls is such that thefront end of the plate will just arrive at and abut against the pins nasthey begin to enter the holes q. Thus these pins serve to adjust andregulate the front end ofAthe plate, so as to be parallel with the axisof the rolls when entering between the rolls.

The upper rolls c and (Z have their bearings in blocks a, which can beadjusted by screws b.

The four rolls are properly geared together by cog-wheels e e gff. l

The roll w is what I term a sweeping and forming roll. This roll isplaced just back of the last or second set of corrugating-rolls, and isplaced in bearings t, which are adjustable by means of set-screws u andslots t t', so that it can be set in the proper position to sweep orform the sheet into a curved form suitable for the purpose to which itis to be applied. This roll is grooved out, as fully shown in Fig. 3, sothat as the corrugated sheet or metal plate leaves the last set of rollsit is received onto the corrugated or grooved sweeping and forming roll,by which it is guided and directed as it leaves the last set of rolls,and at the same time it gives the corrugated sheet or plate suchadirection that it (the sheet) is bent into a curved form, as fullyshown in red lines in Fig. l.

The distance between the two sets of rolls is such that the front marginof the plate enters the space t t between the rolls c c at the same timethat the rear margin of the plate leaves the rst set of rolls7 so thatthe margins of the corrugated sheets are left smooth and plain. It mayalso be remarked in this connection that the circumference ot each rollis such that it completes one revolution during the passage of the sheetbetween each set of rolls.

The shoulders y of the rolls d d are the same distance from each otheras those of the rolls c c', so as to preserve the same thickness of theside margins of the corrugated plates, as shown at a z, Figs. 4 and 5.

The regulating and adjusting pins p are shown attached to the roll CZ;but they may be attached to the roll CZ or to all of the rolls, and maybe used with advantage when the plates are fed by hand and also when thecorrugation is completed by passing the sheet between only one set ofrolls.

The sweeping and forming roll w may also be used with advantage whenonlyone set of corrugating-rolls is used.

Having described my improved machine for corrugating iron forboiler-plates and other purposes, what I claim therein as new, anddesire to secure by Letters Patent,is-

1. Feeding the'sheets or plates of metal at the proper time by a feedingdevice constructed and operated substantially as above described.

2. The feeding device above described, in combination with theadjusting-pins on the first set of corrugating-rolls, as herein setforth.

3. The combination of two sets of corrugating-rolls with the sideguideshh, constructed,

arranged, and operated substantially as shown and described.

4. The corrugated sweeping and forming roll mgnstructed and used as andfor the purposesl described.

R. MONTGOMERY. Witnesses:

THos. H. DODGE, M. J. MONTGOMERY,

